"The Watched Worker – Why people work harder when you dim the lights" investigates the "Hawthorne Effect," a foundational myth of modern management. In the 1920s, researchers at the Western Electric Hawthorne Works factory tried to find the optimal lighting for productivity. When they made the lights brighter, productivity went up. When they made the lights dimmer, productivity also went up. Management theorist Henry Light explains the conclusion: It wasn't the light; it was the attention. The workers performed better simply because they were being observed and felt special. "The Watched Worker" is a guide to the psychology of supervision. It challenges the idea of objective measurement in the workplace, showing that the mere act of measuring a human being changes their behavior. It teaches leaders that engagement often matters more than physical conditions.